The KDYZ-301 is a professional online tester for zinc oxide (MOA) lightning arresters, designed to accurately measure AC electrical parameters during operation. It leverages advanced isolation technology (input resistance <1Ω) for voltage and current signals, ensuring safe and reliable data acquisition even in live environments. Equipped with an 800×480 color touchscreen, high-speed thermal printer, and a 10000mAh lithium battery, it supports 400m wireless data transmission and multi-mode voltage reference sampling. The device complies with China’s DL474.5-92 standard, stores 1000 test sets internally, and generates Word reports via upper software, making it indispensable for power system maintenance and quality control.

• Four voltage reference sampling modes: wired sync, wireless sync, induction sync, and no-voltage sync for flexible on-site use.
• Three-phase simultaneous testing with automatic calculation and no need for manual compensation, improving efficiency.
• AC/DC dual-use design with built-in high-capacity lithium battery, ideal for power-free field environments.
• Upper software support for generating Word reports to 直观 evaluate arrester health status.
• Small computer control with external mouse support for easy and convenient operation.
• Internal storage for 1000 test sets, with USB port for external U-disk data expansion.

• Reference Voltage Input Range (Peak): 20V–250V, Accuracy ±(2% reading + 5 digits)
• Total Leakage Current Range (Peak): 100μA–10mA, Accuracy ±(2% reading + 5 digits)
• Resistive Current Range (Peak): 100μA–10mA (secondary method, no inter-phase interference)
• Capacitive Current Range (Peak): 100μA–10mA, Accuracy ±(5% reading + 5 digits)
• Current Harmonic Accuracy: ±(10% reading + 10μA)
• Current Channel Input Resistance: ≤2Ω
• Electric Field Strength Range: 30kV/m–300kV/m, Total Harmonic Content <30%
• Electric Field Strength Accuracy: ±(10% reading)
• Angle Measurement Range: 0°–360°
• Power Consumption: 4W
• Charging Power: DC12V
• Lithium Battery Capacity: 10000mAh
• Wireless Transmission Distance: 400m
• Display: 800×480 color touchscreen
• Compliance Standard: DL474.5-92 (China Power Industry Standard)